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GB/T 35031.5-2025Customer energy management system - Part 5: Application interface specification (English PDF)

用户端能源管理系统　第5部分：应用侧接口规范

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Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

December 31, 2025

Implementation date

July 1, 2026

Scope

GB/T 35031.5-2025 is the English-translated version of 用户端能源管理系统　第5部分：应用侧接口规范.

GB/T 35031.5-2025 is the Chinese standard "Customer energy management system - Part 5: Application interface specification". Its scope clause reads: This document specifies the application program for information exchange between the user-side Energy Management System (CEMS) master station and the energy service platform. interface.

This document applies to the development of application programming interfaces (APIs) for user-side energy management systems. Its clauses include terms, definitions and abbreviations.

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Document preview — GB/T 35031.5-2025

National Standard of the People's Republic of China

ICS: 29.020
Classification: K 00

Issued by: State Administration for Market Regulation; Standardization Administration of the PRC

Preface
Introduction
1.Scope
2 Normative References
3.Terms, Definitions, and Abbreviations
3.1 Terms and Definitions
3.2 Abbreviations
4.Application-side API Scope
4.1 System Role Definition
4.2 Data Interaction Process
4.3 Scope of Data Provision
5.Interface Call and Response Methods
5.1 Data Transmission Principles
5.2 Request Header
5.3 Request URL
5.4 Return Code
5.5 Safety Description
5.6 Extensibility Description
6.Basic Information Model (Basic)
6.1 Basic Information Model Diagram
6.2 Equipment Category
6.3 Client-Side (Cems)
6.4 Data Count
6.5 Dynamic Data
6.6 Historical Data
6.7 Page Information (Page)
6.8 Measurement Parameters (8)
6.9 Access Point (Point)
6.10 Reading
6.11 Simple Equipment Category (10)
6.12 SimplePoint
6.14 Static Data
6.15 Statistical Data
7 Static Basic Information Interface
7.1 Retrieving Static Data from the Client (GetCemsStaticData)
8.Dynamic Real-Time Information Interface
9 Historical Data Information Interface
10 Summary Statistical Information Interface
Appendix A (Informative) Example 36 of the CEMS Application-Side Interface Requirements Response (DR) Extension
Appendix B (Informative) Example 42 of the demand management extension of the CEMS application-side interface
Appendix C (Informative) Example 46 of CEMS Application-Side Interface

1 Scope

This document specifies the application program for information exchange between the user-side Energy Management System (CEMS) master station and the energy service platform.

interface.

This document applies to the development of application programming interfaces (APIs) for user-side energy management systems.

2 Normative references

The contents of the following documents, through normative references within the text, constitute essential provisions of this document. Dated citations are not included.

For references to documents, only the version corresponding to that date applies to this document; for undated references, the latest version (including all amendments) applies.

This document.

GB/T 7408-2005 Data Elements and Interchange Formats - Information Interchange - Representation of Date and Time

GB /Z 32500-2016 General Requirements for Data Interfaces of Smart Grid User-End Systems

GB/T 35031.1-2018 User-side energy management system - Part 1.Guidelines

GB/T 35031.2-2018 User-side energy management system - Part 2.Main station functional specifications

GB/T 35031.4-2022 User-side energy management system - Part 4.Specification for information interaction between the master station and the gateway

GB/T 35031.6-2019 User-side energy management system - Part 6.Management indicator system

GB/T 35031.302-2022 User-side energy management system - Part 3-2.Subsystem interface gateway data configuration

3 Terms, Definitions and Abbreviations

3.1 Terms and Definitions

GB /Z 32500-2016, GB/T 35031.1-2018, GB/T 35031.2-2018, GB/T 35031.302-2022,

The terms and definitions defined in GB/T 35031.4-2022, as well as the following terms and definitions, apply to this document.

3.1.1

A computerized information system used for monitoring and managing energy at the user end.

Note 1.Cems represents a core object in CEMS, that is, a specific instance of CEMS. In the API interface, Cems is used to describe and manage...

Basic information about the user client and associated access points.

Note 2.cems represents the user-side attributes and is associated with user-side Cems-related information.

Note 3.In the API URL, cems indicates that the interface is applicable to user-side energy management systems.

3.1.2

Third-party providers of energy or those integrating and optimizing energy resources through digital means to offer users energy management, trading, monitoring, and other services.

Fang platform.

......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 57 pages — is available in the English PDF.

Referenced standards

Normative references

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